Subcutaneous arterial arrangement in the dorsum of the house musk shrew, Suncus murinus

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The house musk shrew (Suncus murinus) was studied to uncover the arrangement of the subcutaneous arteries in the dorsum. The axial arterial tracts were obviously found on the outer surface of the panniculus carnosus bilateral to the spinal column. These tracts extended longitudinally beyond the angiosomes. The thoracodorsal artery and the deep circumflex iliac arteries were the main suppliers of the dorsal axial tract. A large number of transverse twigs from the axial tracts formed an arterial network that covered the entire dorsum. The general arrangement of the subcutaneous arteries in the dorsum of the musk shrew resembled that in the rabbit. This arrangement was considered to be closely related to the high skin mobility of musk shrews. This unique vasculature in the dorsum is one of the advantages of using S. murinus as an experimental model for studies focusing on the skin.

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